A&P
Gradient
A difference in chemical concentration, electrical charge, physical pressure, temperature, or other variable between one point and another is a physiological
Negative feedback
During exercise, one generates excess heat and the body temperature rises. As a response, blood vessels dilate in the skin, warm blood flows closer to the body surface, and heat is lost. This is an example of
Organ
Fill in the correct term for the following sequence: Macromolecules, organelles, cells, tissues, __________, organ systems, organism.
Healthy 22 year old
If the textbook states a value for a typical human heart rate, you should assume that the value refers to the heart rate of a(n)
large molecules
Macromolecules are
Homeostasis
The ability to maintain a relatively stable internal environment in spite of changes in the external environment is known as
Organ
The pancreas is an example of a(n)
Physiology
The study of how the body functions is called
Epidermal
All of the following are human organ systems except
The digestive system
All of the following are organs except
Hypothosis
An educated speculation or a possible answer to a question is called a(n)
A microscopic structure in a cell that carries out individual function
An organelle is best described as which of the following?
Pressure
Baroreceptors detect changes in
Physiological variations
Differences in sex, age, weight, diet, degree of physical activity, environment, among other things are important what?
Barorecepters
The receptors located in the heart, aortic arch, and carotid sinuses that trigger autonomic reflexes in response to fluctuations in blood pressure are known as
Cells
The smallest unit of an organism that carries out all the basic functions of life is called a(n)
Anatomy
The study of normal body structures is called
Organ system
The urinary system is an example of a(n)
Adaptation
What are features that have evolved in response to environmental pressures called?
The inductive method
What is the process of using numerous observations to develop general principles and predictions about a specific subject called?
Macromolecule
A molecule of large size and high molecular weight, such as a protein, is called a(n)
Negative
Blood pressure is controlled by a _______ feedback mechanism
Higher; Lower
Chemicals in a solution can move down a concentration gradient. This means the chemical will move from the area of __________ concentration to the area of _________blank concentration.
Adaptation
Features of anatomy, physiology, and behavior that evolve in response to selection pressures are called
Maintain a stable internal environment
Homeostasis is the ability of an organism to
Organ
What is an anatomical structure that is composed of at least two different tissue types, has recognizable structural boundaries, and has a discrete function different from the structures around it called?
Theory
What is an explanatory statement, or set of statements, that concisely summarizes the state of knowledge of a phenomenon and provides direction for further study called?
Positive Feedback
What type of feedback is a self-amplifying cycle in which a physiological change leads to an even greater change in the same direction?
Positive Feedback
When a woman is giving birth, the head of the baby pushes against her cervix and stimulates the release of the hormone oxytocin. Oxytocin travels in the blood and stimulates the uterus to contract. Labor contractions become more and more intense until the baby is expelled. This is an example of
Adaptation
Which evolutionary process leads to the establishment of species characteristics that favor survival and reproduction? Multiple choice question.
Predators, competition for food, disease
Which forces can act as selective "pressure"?
Connective, epithelial, muscle, nervous
Which is an example of a class of tissue?
Mitochondria, centrioles, lysosomes
Which is an example of an organelle?
Blood Clotting and child birth
Which of the following are examples of a positive feedback mechanism?
Body temperature
Which of the following is an example of a physiological negative feedback mechanism?
Natural Selection
Which of the following states that some individuals have hereditary advantage over their competitors? Multiple choice question.
Higher to lower
Without the expenditure of energy, the net movement of matter in a physiological gradient will always be from a region of ______ concentration to a region of ______ concentration.
down gradient
Without the use of energy, matter tends to flow
